Domoticz

I'am confused.
I have read this page:http://www.domoticz.com/forum/viewtopic.php?t=9638

Can someone give me a step by step description for how to use this?
I don't get any results with the many scripts in this thread.

I got 6 divices

AmmoBox (LMS speaker)
BoomZero (LMS speaker)
Woonkamer (LMS speaker)

VolumeAmmoBox (dimmer)
VolumeBoomzero (dimmer)
VolumeWoonkamer (dimmer)

Let we start with one.
How can I control the volume of my AmmoBox lms speaker?
Which scripts will be the correct one?

I hope someone will help me.

gr,
Sven